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UCC28056 Datasheet Preview

UCC28056 Datasheet

6-Pin Single-Phase Transition-Mode PFC Controller

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UCC28056
SLUSD37D – OCTOBER 2017 – REVISED JULY 2019
UCC28056 6-Pin Single-Phase Transition-Mode PFC Controller
1 Features
1 Ultra-low no-load input power enables < 80-mW
standby power at 230 VAC in PFC+LLC system
• Excellent light load efficiency and high efficiency
over wide range of load due to multi-mode TM
and DCM control
• Enables low system cost through FET Drain valley
synchronized turn-on which eliminates need for
second winding on the boost inductor
• Enables compliance to green power standards
without disabling PFC
– EuP Lot 6 Tier 2, CoC Ver. 5 Tier 2, Energy
Star Ver. 6.1, DoE Level VI
• Burst mode with soft-entry and soft-exit periods
enables ultra-low audible noise output
• Enhanced Error Amplifier, responds rapidly to load
steps without degrading input current distortion
• User adjustable valley delay ensures valley
switching
• Low start-up current consumption (<46 µA)
• Wide VCC range 8.5 V to 34 V
• Cycle-by-cycle current limit
• Second independent output over-voltage
protection
• Integrated over-temperature protection
• Create a custom design using the UCC28056
device with the WEBENCH® Power Designer
2 Applications
• Desktop computing and Digital TV
• Gaming, Set top box and AC adapter front end
• LED drivers and luminaries
• Inductrial and Medical Power Supplies, E-bike
Chargers, Power Tools Chargers
3 Description
The UCC28056 device drives PFC boost stages
based on an innovative mixed mode method that
operates in transition mode (TM) at full load and
transitions seamlessly into discontinuous conduction
mode (DCM) at reduced load, automatically reducing
switching frequency. This device incorporates burst
mode operation to further improve light load
performance, enabling systems to meet challenging
energy standards while eliminating the need to switch
off the PFC. UCC28056 can drive a PFC power stage
up to 300 W, ensuring sinusoidal line input current
with low distortion, close to unity power factor. When
used with the LLC controller UCC256403/4, and dual
synchronous rectifier controller UCC24624 less than
80 mW system standby power can be achieved,
enabling PFC always on architecture and eliminating
the need for an auxiliary converter. This with FET
Drain valley turn-on with simple boost inductor allows
fewest component count.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
UCC28056
SOT-23(6)
2.90 mm x 1.6 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
No Load Power
50
45
40
35
30
25
20
80
120 160 200 240
Line Voltage (VRMS)
280
CIn
RZC1
Simplified Application
LBST
UCC28056
VOSNS
COMP
ZDC/CS
DRV
CC0
RC0
CC01
DBST
ROS1
VOUT
Bus
COut
ROS2
VCC
RZC2
VCC
GND
CCC
RDG
RCS
Bus
GND
Copyright © 2018, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

UCC28056 Datasheet Preview

UCC28056 Datasheet

6-Pin Single-Phase Transition-Mode PFC Controller

No Preview Available !

UCC28056
SLUSD37D – OCTOBER 2017 – REVISED JULY 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Tables................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Typical Characteristics ............................................ 10
8 Detailed Description ............................................ 13
8.1 Overview ................................................................. 13
8.2 Functional Block Diagram ....................................... 14
8.3 Feature Description................................................. 15
8.4 controller Functional Modes .................................... 24
9 Application and Implementation ........................ 26
9.1 Application Information............................................ 26
9.2 Typical Application ................................................. 26
10 Power Supply Recommendations ..................... 43
11 Layout................................................................... 43
11.1 Layout Guidelines ................................................. 43
11.2 Layout Example .................................................... 43
12 Device and Documentation Support ................. 46
12.1 Custom Design With WEBENCH® Tools ............. 46
12.2 Receiving Notification of Documentation Updates 46
12.3 Community Resources.......................................... 46
12.4 Trademarks ........................................................... 46
12.5 Electrostatic Discharge Caution ............................ 46
12.6 Glossary ................................................................ 46
13 Mechanical, Packaging, and Orderable
Information ........................................................... 46
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (February 2018) to Revision D
Page
• Added Link to UCC256403/4 LLC controller .......................................................................................................................... 1
• Added Link to UCC24624 synchronous rectifier controller..................................................................................................... 1
• Updated Description section................................................................................................................................................... 1
• Updated Description section................................................................................................................................................... 1
• Added Device Comparison Table .......................................................................................................................................... 3
• Changed VBSTFall Graph into Normalized Graph ................................................................................................................... 11
• Changed VBSTRise Graph into Normalized Graph .................................................................................................................. 11
• Changed VOSNSOVP1Rise Graph into Normalized Graph ......................................................................................................... 12
• Changed VOSNSOVP1Fall Graph into Normalized Graph .......................................................................................................... 12
Changes from Revision B (January 2018) to Revision C
Page
• Updated Description section .................................................................................................................................................. 1
Changes from Revision A (November 2017) to Revision B
Page
• Updated Simplified Application............................................................................................................................................... 1
• Changed document status from Advance Information to Production Data ............................................................................ 1
Changes from Original (October 2017) to Revision A
Page
• Added WEBENCH links to data sheet ................................................................................................................................... 1
2 Submit Documentation Feedback
Product Folder Links: UCC28056
Copyright © 2017–2019, Texas Instruments Incorporated


Part Number UCC28056
Description 6-Pin Single-Phase Transition-Mode PFC Controller
Maker etcTI
Total Page 30 Pages
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